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A system of equations is given by
ax+by=5cx+dy=−1.\begin{aligned} ax + by &= 5 \\ cx + dy &= -1. \end{aligned} ax+bycx+dy=5=−1.
If the inverse of [abcd]\left[ \begin{array}{cc} a & b \\ c & d \end{array} \right][acbd] is [32−31]\left[ \begin{array}{cc} 3 & 2 \\ -3 & 1 \end{array} \right][3−321], then what is x+y?x + y?x+y?
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